Human leg, Shoulder, Arm, Leg, Thigh, Joint, Physical fitness, Knee, Standing, Lunge,

KATHRYN WIRSING

Adding reverse lunges into your regular rotation will do for your body what you should be doing for your car: delivering a routine, total-body tune up.

The single-leg move will increase stability, fix muscle imbalances, reduce knee and hip pain, and even help you walk better in heels, says Darin Hulslander, certified strength and conditioning specialist and personal trainer with This Is Performance. And just like a wax and shine, that step-back-and-squat will build your booty and sculpt your legs.

How to: Stand with feet shoulder-width apart, hands at side or on your hips. With your right foot, step back about one and a half times your normal stride length, landing with the ball of that foot on the ground and your heel up. Lower the back leg straight down until it gently grazes the ground or close to, creating a 90-degree angle in the front leg. Push through the heel and midfoot of the front leg to return to standing, bringing your right foot back in line with your left. Repeat on the left side. That’s one rep.